000003213 001__ 3213
000003213 005__ 20220921045516.0
000003213 037__ $$aBELLE2-CONF-PH-2022-007
000003213 041__ $$aeng
000003213 100__ $$aHikaru Tanigawa
000003213 245__ $$aMeasurement of decay-time dependent CP violation in B0 → KS0KS0KS0 using 2019--2021 Belle II data
000003213 260__ $$a$$c2022-09-14
000003213 300__ $$amult. p
000003213 520__ $$aWe report a measurement of decay-time dependent CP-violating parameters in B0 → KS0KS0KS0 decays. We use $(198.0 \pm 3.0) \times 10^6\ \BB$ pairs collected at the \FourS resonance with the Belle II detector at the SuperKEKB asymmetric-energy $e^+e^-$ collider. The observed mixing-induced and direct \cp violation parameters are $\scp = -1.86\ _{-0.46}^{+0.91}~{\rm (stat)} \pm 0.09~{\rm (syst)}$ and $\acp = -0.22\ _{-0.27}^{+0.30}~{\rm (stat)} \pm 0.04~{\rm (syst)}$, respectively.
000003213 700__ $$aYutaka Ushiroda
000003213 700__ $$aKazutaka Sumisawa
000003213 700__ $$aKoji Hara
000003213 8560_ $$ftanigawa@hep.phys.s.u-tokyo.ac.jp
000003213 8564_ $$uhttps://docs.belle2.org/record/3213/files/BELLE2-CONF-PH-2022-007.pdf